[...] i cannot use the modules [...] For security reasons [...]

If you want security, you don't reinvent the wheel, but instead use modules. See Re^3: My promiscous singleton, Re^4: CSV file with double quotes and many other postings.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^5: Perl code to format the text file by inserting tag in blank line by afoken
in thread Perl code to format the text file by inserting tag in blank line by DAN0207

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